import java.util.concurrent.atomic.AtomicInteger;

public class Main5 {
private static AtomicInteger count = new AtomicInteger(0);
    public static void main(String[] args) throws InterruptedException {
        Thread t1 = new Thread(()->{
            for (int i = 0; i <50000 ; i++) {
             count.getAndIncrement();//count++
//           count.incrementAndGet();//++count
//           count.getAndDecrement();//count--
//           count.decrementAndGet();//--count
     //      count.getAndAdd(10);//count+= 10
            }
        });
        Thread t2 = new Thread(()->{
            for (int i = 0; i <50000 ; i++) {
                count.getAndIncrement();//count++
              /*  count.incrementAndGet();//++count
                count.getAndDecrement();//count--
                count.decrementAndGet();//--count*/
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t1.join();
        System.out.println(count.get());
    }
}
